Steam-boiler.



No. 659,622. Patented Oct. 9,, I900. J. MALLET & A. .n. mosuzn;

STEAM BOILER.

(Application filed Mar. 8, 1900.)

wz mmms PETERS ca. Moro-Lima WASHINGTON. u c.

UNITE STATES PATENT OFFICE.

JUSTIN MALLET, OF MARSEILLES, FRANCE, AND ARTHUR R. MOSLER, OF NEYV YORK, N. Y.; SAID MALLET ASSIGNOR TO SAID MOSLER.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 659,622, dated October 9, 1900.

Application filed March 8, 1900. Serial No. 7,819. (No model.)

To all whmn it may concern:

Be it known that we, JUSTIN MALLET, a citizen of the Republic of France, and a resident of Marseilles, France,and ARTHUR R. MOSLER, a citizen of the United States, and a resident ofNew York, borough of Manhattan, State of New York, have invented a new and useful Steam-Boiler,of which the following is a specification.

Our invention relates to a steam-boiler, and more particularly to a boiler adapted to flash the water into steam as fast as it is fed to the boiler.

The object is to provide a safe and economical boiler of this character adapted to utilize the heat to great advantage and capable of being set up, together with its furnace or heat supply, in a small space wherever desired.

A practical embodiment of our invention is represented in the accompanying drawings,-in Which Figure l isa view of the boiler and a furnace in vertical section. Fig. 2 is a transverse section on the plane of the line 2 2 of Fig. 1. Fig. 3 is a partialhorizontal section showing the water and steam space filled with wires extending longitudinally thereof, and Fig. 4 is a similar partial horizontal section showing the water and steam space filled with fibrous asbestos.

The furnace-wall is denoted byA and may be made of any suitable material and lined in any approved manner to protect it against the heat.

The wall A in the present instance is cylindrical in cross-section and stands upon a base B, the interior of which serves as an ash-pit.

In the present instance the furnace is shown as adapted for burning coke or some suitable solid fuel and is provided at the bottom of the fire-box with a grate 0, supported upon a standard 0, uprising from the bottom of the ash-pit or base B. The fire-box is denoted by D and has an inlet (1 for receiving the fuel, and access to the interior of the box may be had through a door d, opening through the f urnace-wall A at the opposite side of the firebox from the inlet for the fuel.

The furnace-wall A is rounded at the top,

other half in the lower boiler-section.

forming a dome like structure centrally, through which the uptake E passes for conveying away the products of combustion.

The boiler to which our present inventionchamber f being open at its lower end and the lower chamber, similar to f, being open at its upper end, the two half-sections when assembled being arranged to bring the open ends of the annular chambers into position to register with each other, forming thereby an annular closed chamber, one half of which is formed in the upper boiler-section and the The annular chambersf are provided with wings or flanges'which extend outwardly and inwardly from the exterior faces of the chainber-wall along radial lines. These flanges are quite similar and are denoted by f. The flange f extends continuously from the open face of the annular chamber f continuously around the closed end of the chamber and back on the opposite side of the chamber to its open end, forming a flat U-shaped flange when considered as a whole. These flanges are preferably so arranged on the upper and lower boiler half-sections that they will register when the half-sections are assembled, thereby forming a complete flange extending entirely around the outer and inner wall of the complete water and steam chamber, and they are located at such intervals as may be found most desirable. In the presentinstance they are located at such intervals and are made of such width as to bring their inner edges in proximity to the vertical axis of the boiler, and at intervals along this vertical axis baffle-plates G G are located for the purpose of deflecting the heat passing upwardly from the fire-box D. The baffle-plates G G are articulated to enter between the flanges f and are sustained in position at intervals along the height of the boiler by means of a rod g, supported by a crown-piece g, fastened in position centrally over the fire-box D. Water is admitted to the bottom of the chamber f through an inlet-pipe H and the steam def livered from the top of the chamber th rough a delivery-pipe H.

The interior of the boiler is provided with means for laminating the steam, the provision in Figs. 1 and 2 being a pile of segmental blocks denoted by I, provided with vertical perforations '1", the blocks I being arranged to bring the holes 2 in staggered relation to one another and so arranged with reference to one another that the hole in an upper block will lap ever to a slight extent the hole in the block next below, so that the steam escaping upwardly through these blocks I, which may be of iron or steel, will be forced through the small crevices between successive openings in the blocks and will be forced to take a zigzag c0urse,. thereby becoming superheated before it finally escapes through the pipe H.

Instead of the blocks I the interior space of the boiler may be filled with wires I, as shown in Fig. 3, the interstices between the wires serving to laminate the steam and superheat it, or the interior of the boiler may be filled with fibrous asbestosP, as represented in Fig. 2.

In operation the lower portion of the boiler.

is in the hottest position in the furnace, thereby insuring the flashing of the water into steam as soon as it enters the boiler. The wings f become highly heated as the products of combustion pass upwardly between them both on the inner and outer sides of the furnace, thereby conducting the heat to the walls of the boiler and to the laminating material within the boiler,which in turn continuously superheats the steam until in a dry state it is delivered through the pipe H. The great amount of wing-surface exposed to the heat furnishes a great amount of heat to the walls of the boiler, thereby utilizing the heat of theproducts of combustion to great advantage. These wings or flanges also serve the additional purpose of materially strengthening the walls of the boiler. The flanges or wings f, together with the support 9' and the lower end of the boiler-chamber, form the crown-sheet of the fire-box and receive the heat directly from it.

It is obvious that changes might be resorted to in the form of the fire-box and that liquid half-sections closed at one end and open at the opposite end, the two half-sections being arranged to be united at their open ends to form a continuous interior annular chamber, the said half-sections being provided with radial flanges or wings extending continuously from the inner wall at the open end around to the outer wall at the open end, and suitable inlet; and outlet pipes connected with the half-sections, substantially as set forth.

2. The combination with a boiler composed of a narrow annular chamber provided with flanges or wings radiating from its opposite walls, of battle-plates intermediate of the inwardly-extending flanges for directing the products of combustion between the series of inner and outer flanges or wings, substantially as set forth.

3. The combination with a boiler composed of a narrow annular chamber provided with radial wings projecting inwardly and outwardly from its walls, of series of perforated blocks arranged with the perforations in staggered order and means for directing the steam through the holes for laminating the steam, substantially as set forth.

at. The combination with a furnace, of a boiler located within the furnace and consistiug of a narrow annular chamber provided with wings or flanges radiating inwardly and outwardly from the walls of the chamber, the said winged annular chamber forming the crown-sheet of the fire-box of the furnace for admitting the products ofcombustion directly in contact with the opposite sides .of said radial flanges, substantially as set forth.

In testimony that we claim the foregoing as our invention we have signed our names, in presence of two witnesses, this 5th day of March, 1900.

JUSTIN MALLET. ARTHUR R. MOSLER. Witnesses:

FREDK. HAYNES, EDWARD VIESER. 

